Ventilator.



N0-.757,465. l PATENTED APR.,19,1904. s. H. JAcoBsoN.

- VENTILATOR. APPLIOATION Hmm .um e, 190s.

N0 MODEL.

i I Y @u l n ,mw Ul E v may be either the holdor cabin of avessel or gated central body 3, which is preferably recl tangular in cross-section. Secured to the body UNITED STATES Patented April 19, 1904.

PATENT OFFICE.

SAMUEL HOUSTON `JACOBSON, OF NEW YORK, N. Y., ASSIGNOR TO NATIONAL VENTILATING COMPANY, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 757,465, dated April 19, 1904.

Application liled January 6, 1903.`

To @ZZ whom it may concern:

Beit known that I, SAMUEL HOUSTON JACOB- SON, a citizen of the United States, residing at New York city, New York, have invented certain new and useful Improvements in Ventilators, of which the following is a specification.

My invention relates to ventilators, the object of the same being to provide novel means located above the deck of a ship or the roof of a car, dwelling, or other building structure for Ventilating the rooms or apartments within the same.

The inventionrelates particularly to that class of Ventilating devices in which a hood or casing is employed having an opening therein leading to the space to be ventilated and a two-part valve so located and disposed within said hood or casing that it will cut off said opening from the direct current of air, but which will leave said opening uncovered on the side thereof facing the direction toward whichthe current moves.

The details of the invention will hereinafter appear, and the novel features thereof will be set forth in the claims.

In the drawings forming part of this specification, Figure l is a vertical central sectional view of a ventilator constructed in ac-A cordance with my invention. Fig. 2 is a horizontal section'of the same, and Fig. 3 is an elevation of a slightly-modified construction.

Like reference-numerals indicate like parts in the different views.

The Ventilating pipe or conduit l leads to the space or spaces to be ventilated, which the rooms or other apartments of a building structure. The same is vertically disposed and projects up to apoint above the deck of the vessel or the roof lofthe building to which it is applied.

Mounted for rotation upon the upper end of the pipe or conduit 1 is a ventilating-cowl 2, the same having a hollow somewhat-elon- 3 and extending outwardly in opposite di- Serial No. 138,007. (No model.)

` maintain the body 3 of said hood in line with said currents,"with the expanded end 4 which receives the current of air facing the direction from which the wind is blowing. To compensate for the additional weight of the expanded end 5 and to properly balance the hood 2, the

end 4 is provided with a heavy ring 6 of iron or other suitable material, secured in place around the outer edge of said end. Eor the ring 6,

. however, any othersuitable form of equalizing or counterbalancing device may be substituted.V The bottom wall of the body 3 of the hood is provided with a circular opening through which projects a short tubular neck or section of tube 7. The upper end of said neck projects slightly above the bottom wall of the body, 3, forming an annular shoulder or projection, which prevents the entrance of water or other foreign substance on the bottom of the cowl-body into the Ventilatingpipe l. The said neck is secured to said body by bolts, rivets, or other analogous securing devices `extending through the flange 8, formed around the opening in said body. It is obvious, however, that these two parts may lbe secured to each other in any other suitable Way. The neck 7 is circular in cross-section andsurrounds the pipe or conduit l. The said neck is supported on the pipe l and connected thereto with provision for rotary movement by means of the bearing-plates 9 and `10, secured, respectively, to the neck 7 and panded end 4 toward the wind.

of the pipe or conduit l, and the arms 12, which are secured to or formedintegral with the bearing-plate 10, extend downwardly and outwardly therefrom and are secured at their outer ends to the inner surface of said pipe or conduit. seen that theV pivot on which the cowl 2 is mounted to turn is located at the center of the pipe or conduit 1 and at the center of the neck 7, which communicates with the body of said cowl. The bearings are thus housed and protected by the neck 7 and the pipe or conduit 1.

To maintain the cowl 2 properly centered on the upper end of the pipe or conduit 1 and to prevent the tipping of said cowl and the lateral movement of the neck 7 thereon, antifrictional devices are provided between the adjacent surfaces of said conduit and said neck. These antifrictional devices have been shown in the form of rollers 14, which fit within openings in the pipe 1, project slightly beyond the outer surface of said pipe, and are mounted upon pivots 15. The said pivots extend longitudinally of' said pipel and are secured in place within grooves or channels formed in said pipe. v

Located within the body 3 of the cowl 2 is a valve 16, the same being shown as pivoted upon a rod 17 and made up of the two wings 18 and 19. The wing 18 of said valve lies at an angle to the body of the cowl, receives the impact of the air entering the cowl 2 through the expanded end 4 thereof, and cooperates with the bottom wall of said cowl adjacent to the upper edge of the neck7 to cut off the direct current of air from said neck, and consequently from the Ventilating pipe or conduit 1. The wing 19 of said valve is at this time located parallel to the upper wall of the body 3 of the cowl. The valve thus produces a somewhat constricted passage through the body of the cowl. The air in passing through the body of the cowl is therefore compressed and in escaping through the expanded end 5 acts with greater force than it otherwise would in creating an induced draft from the space to be ventilated up through the Ventilating pipe or conduit 1.

In operation the cowl 1 is free to rotate upon the bearings between the neck 7 thereof and the Ventilating pipe or conduit 1, and by reason of the greater length of the end 5 thereof the same is automatically turned by the wind, so as to always maintain the ex- When there is a current of air blowing, therefore, the same will always pass through the cowl 1 from the inlet end 4 toward the discharge end 5. In thus passing through the cowl the direct current iscut 0H from the Ventilating pipe or conduit 1 by the Wing 18 of the valve 16. All dust, dirt, water, and other like impurities through the pipe 1 into the space with which By this construction it will beA it communicates. As above stated, however, the air in passing through the contracted space between the valve and the upper wall of the body 3 is compressed and is finally discharged through the expanded end 5 of the cowl. This airy creates an induced current upwardly through the Ventilating pipe or conduit 1, automatically carrying off the foul gases and vitiated air from the space to be ventilated, with which said pipe communicates.

The form of my invention illustrated in F ig. 3 of the drawings is similar in all respects to that shown in Figs. 1 and 2 except that the expanded ends 4 and 5 of the cowl are of substantially the same dimensions. In this case the cowl is automatically turned so that the inlet end 4 thereof will be always located toward the wind by means of a vane 20. rIhe said vane is secured to the side ofthe cowl on which the expanded end 5 is located, and to counterbalance the weight of said vane the end 4 of the cowl is provided with a heavy ring 21 around its edge similar to the ring 6, above referred to. For the ring 21, however, any other suitable counterbalancing device may be substituted.

The forms of my invention illustrated in the drawings and above described are those which are deemed by me at this time to be the preferable ones. I realize, however, that the invention is susceptible of modiiication, and

I do not, therefore, limit myself to any of the IOO stick there could be no possibility of a direct air-current passing down the pipe or conduit 1 when the wind changed so as to enter the cowl through the expanded end 5. In the latter event the valve would be automatically turned on its pivot and the wing 19 would assume a position corresponding to that in which the wing 18 is shown, with its outer edge in vcontact with the bottom wall of the hood 2,

adjacent to the projecting upper end of the neck 7.

Having now described my invention, what I claim as new, j and desire to secure by Letters Patent, is-

1. The combination with a Ventilating pipe or conduit, of a rotary cowl comprising a hollow transversely-extending body having an opening in the bottom wall thereof, a neck or tu be secured to said body, extending through said opening and surrounding said pipe or conduit, bearing-plates located at the common center of said neck and pipe, by means of which said cowl is supported from and mounted to turn on said pipe, angularly-arranged IIO IZO

arms leading upwardly from the upper of said plates and connecting the same with said neck, angularly-arranged arms leading downwardly from the lower of said plates and connecting the same with said pipe, and a valve in the body of said cowl forming a contracted passage therethrough and serving to cut off said opening from the direct current of air.

2. The combination with a Ventilating pipe or conduit having openings in the sides thereof, of a rotary cowl comprising a hollow transversely-extending body having an opening in the bottom wall thereof, a neckcor tube secured to said body, extending through the latter opening and having its upper end projecting above the bottom wall of said body, forming a shoulder, the said neck surrounding said pipe or conduit, bearings between said neck and pipe, located at the common center thereof, antifrictional rollers mounted within the openings in said pipe, projecting beyond the outer surface thereof and adapted to be engaged by the inner surface of said neck, and a valve in the body of said cowl, forming a contracted passage therethrough andser'v-1 ing to cu't off said pipe from the dir'ect current of air.

3. The combination with a Ventilating' pipe or conduit, of a cowl comprising a hollow transversely-extending body having an opening in the bottom wall thereof communicating with said pipe, a neck or tube secured to said body and extending through said opening, with its upper end projecting above the bottom wall of said body, forming a shoulder, the said neck surrounding said pipe or conduit and rotatably mounted thereon, and a valve in the body of said cowl, forming a contracted passage therethrough and serving to cut 0E said opening from the direct current of a1r.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

SAMUEL HOUSTON J ACOBSON.

Witnesses:

WM.`v M STOCKBRIDGE, J J. REILLY. 

